Rule attachment.



T. W. S OUTHARDt RULE ATTACHMENT.

APPLIGATIQN FILED MAR. 3, 1913.

Patented Sept. 15,1914,

THE NORRIS PETERS CO. PHOTOLITHOH WASHINGTON. D. C.

'iiHoiViAs sournann, or WILLIAMSPORT,PENNSYLVANIA.

RULE arracnnnnr.

To all whom it may concern:

Be it known that I, THOMAS W. SOUTHAiao,

a citizen of the UnitedStates, residing at Williamsport, in the county of Lycoming and State of Pennsylvania, have invented new and useful Improvements in Rule At tachments, of which the following is a specification.

7 This invention has reference to attachmentsjfor rules, and it proposes, briefly, an improved appl1ance,1n the nature of a gage,

which may be readilyattached to and removed from the ordinary two-foot carpenters rule, whereby the latter may be employed foraccurately laying out gage lines and miters, and may be used as a depth gage, tryor T-squarer V i It further comprehends an appliance of the type specified which is automatically held in adjusted position on the rule, is correct and reliable in its adjustment, since it contains no joints to wear or become loose,

and in general, is'extremelysimple, durable and inexpensive.

An embodiment ,of the invent on is illustrated in the accompanying drawing,

whereof a Figure 1 is a perspective view of the improved gage applied to a rule; Fig. 2 is an enlarged inverted transverse section, taken on the line 2-2, Fig. 1; Figs. 3 and 4 are perspective views of the gage, taken from opposite sides.

As shown in said drawing, the gage is constructed from a single blank of sheet metal, for instance, spring-temperedbrass, steel or aluminum, so as to insure the desired resilient gripping action of the hereinafter described rule engaging flanges. This blank, during the stamping operation by which it is produced, is so acted upon by the dies as to form the flange 6 at one end thereof, and the flanges 7 and 8 at the other end. The flanges 7 and 8 are disposed at a right angle to each other, the imaginary line bisecting such angle also bisecting the opposite flange 6 and being perpendicular thereto. The apex of this angle is directed away from flange 6, so that the latter thus constitutes a portion of the base of an imaginary isosceles triangle whose equal sides form a right-angle and are constituted, in part, by the flanges 7 and 8. During the stamping or similar operation, the blank is also formed with a pair of parallel slits 9 I Specification of Letters Patent. I Ap'plicationfiled March 3, ials. Serial no. 751,906.

rammed Sept. 15, 1914.

I and 10 whichintersectt lunctionior fold line, between. the body 5 of the. blank and the base flange 6. The tongues 11 and 12 produced bythese slits are bent outward or away from the blank body 5, and in'the opposite direction from the flanges 6, 7 and 8. Also, they have aslight inward inclinas tiontoward eachother. Theslits 9 and 10 are so positioned that when the tongues are bent in the manner above indicated, they will be disposed a distance apart which is approximately equal to the combined width of the two sections 13 of a standard rule,

the width of the slits being such that the t said. tongues will have a height approximately equal to thethicknessof a section. The tongues, therefore, may be considered as constituting the .afore-mentioned rule-engaging flanges.

By reason of this construction and jarrangement, the finished gage may be readily appliedto either half of the rule, in the.

manner represented in Fig. 1, and then slid along the same in either direction, the inherent resiliency and inward inclination; of,

its tonguesor flanges l1 and 12 causing them to grip the rule sufiiciently tightly to hold the gage in any position into which it may have been moved. Also, the gage may be applied against either side of the rule, and with the apex of the angle formed by the flanges 7 and 8 pointing in either direction, but it will be understood that in removing the gage from the rule it must be slipped off the end of the latter, and, equally, must be fitted upon the end of the rule when it is to be used thereon, this being due to the frictional grip of the side flanges l1 and 12 upon the rule. For the same reason, the gage will not drop from the rule after having been adjusted, nor does it require the use of extraneous clamping devices for retaining it in adjusted position.

The mode of operation is, briefly, as follows: When used for obtaining gage lines,

the base flange 6 is held against one edge of the work with the rule extending across the face thereof and the said flange projecting downward. The rule may then be moved along the work and a pencil or other marker held against the edge of the rule at the proper point. In like manner, the aforesaid flange 6 may serve as the head of a T- square and the rule as the blade thereof, the rule extending across the upper face of a 1 impair its accuracy.

drawing board and the flange engaging one of its edge faces. Also,,the implement, as a whole, may be used as a try-square,to square the ends of floor and siding planks and boards, thus permitting the same to be cut so as to make perfect joints. '7 p The flanges 7 and 8, by reason of their right-angular disposition, enable miters to" be readily marked and cut, one of such flanges'being used for the right hand half;

of; the miter, and the other'fiange' for the left-hand half. :Furthermore, "the implementzmay be. employed as a depth gage by holding the end of the rule against the bot-- tom of the mortise or othergroove, and then sliding the gage upwardly until the flange 6; is-flushlwith the upper surface of the work,

reason, its cost of manufacture is reduced to a m1n mum,"wh1 le, at the'same time, its, durablllt'y and effi'clency are, correspondingly increased, since it has-no joints to wear and -Therule'engaging'flanges l1 and 12, as

previously stated, andas best shown in Fig; 2, w are so b'ent at their junction with the body '5 of the blank as to form a :slight curve, rather than a true right angle, al-

' though itwill be understood that when the gage is applied to arule, the/outer portions ofthese, flanges grip the edges of the latter, and, in consequence, maybe considered as disposed approximately at rightangles to the body of the gage. By providing "this gradual bend, instead of an abrupt bend, such as would be the case if the flanges were lbent directly at rightangles to the body of ?the gage, thegage 1isnot weakened at the point where the flanges join it.

Having described y el ml olaims "An'attachment for pocket-rules consisting 10f a resilient, sheet metal bl'ank having a }base flangeat one end, and a right angul'ar Qflange at the other end, and formed with-a pai rof parallel slits, the portions of 's'aid blankdefined by said slits being bent-out- I ,Wardl'y from the body of the blank in the opposite direction from said flanges but be Zing inolinedtoward ;each other,topr'oduce a pair ofspring clamping flanges for'engage Inent with the oppositeiside] edges of the jrule- In testimony whereo f l have hereunto-set,

,my hand-in pre c two i g:

jwitnesses.

' Witnesses: I

i EMERSON GoLLrNs,-

CH RLEs'J'aREILLYfi Gopiesof this patent me? be obtained for five cents eaehi by addressing ithej f bominissi onei b1; iatents,

i '1 "washingtzomn. G.

rnoMai-s iw. sou1?H nD I 

